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Super Member
Paint thickness questions
Hello geeks.
I am getting a lot more polishing jobs and finally decided to look into PTG.
but before few questions.
I was told that usually primer (30um) + base coat (30um) = 60um. so if total paint thickness is meaused at 80um, you have about 20um thick of clear coat to work.
is this true for most paints?
So if total paint thickness is 120um, is prime + base coat is still 60um? or does primer and base coat thickness also increase?
How about soft paint vs hard paint?
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Jae @ ONYX Detail Garage
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Re: Paint thickness questions
I always wondered the same here is a link Automotive OEM Coatings : BASF Coatings GmbH that gives some more insight. All that you just mentioned varies from one manufacturer to the next. My rule of thumb is about 1.25mil or roughly 31microns.
As far as soft paint and hard paint your best bet is doing test spots with a couple pad/polish combos that get you the results your customer is paying for.
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Super Member
Re: Paint thickness questions
I wonder how many people actually use PTG that can separate primer / base coat / clear coat ....
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Jae @ ONYX Detail Garage
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Re: Paint thickness questions
That tool is not designed for automotive work per the manufacturer.
The industry average is 1.5 to 2.5 mils. It depends on the manufacturer, I have had Honda cars in here with 3.5 mils total. CRZ's I've done have less. If you don't go anymore than.5 mils you should be ok.
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Super Member
Re: Paint thickness questions
Originally Posted by choijw2
Hello geeks.
I am getting a lot more polishing jobs and finally decided to look into PTG.
but before few questions.
I was told that usually primer (30um) + base coat (30um) = 60um. so if total paint thickness is meaused at 80um, you have about 20um thick of clear coat to work.
is this true for most paints?
So if total paint thickness is 120um, is prime + base coat is still 60um? or does primer and base coat thickness also increase? I like to use measurements from under the hood or door jam.
How about soft paint vs hard paint?
Do you mean if it affects the thickness of the paint or polishing in general?
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Super Member
Re: Paint thickness questions
Originally Posted by Rsurfer
Do you mean if it affects the thickness of the paint or polishing in general?
Ah, door jam and under the hood is not clear coated right?
and I meant the thickness of the paint.
Please like my page
Jae @ ONYX Detail Garage
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Re: Paint thickness questions
Originally Posted by choijw2
Hello geeks.
I am getting a lot more polishing jobs and finally decided to look into PTG.
but before few questions.
I was told that usually primer (30um) + base coat (30um) = 60um. so if total paint thickness is meaused at 80um, you have about 20um thick of clear coat to work.
is this true for most paints?
So if total paint thickness is 120um, is prime + base coat is still 60um? or does primer and base coat thickness also increase?
How about soft paint vs hard paint?
you don't need a paint gauge.After the purchase you will find that you won't be using it save your money.
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Re: Paint thickness questions
If you're compounding and polishing on modern paint without one, you really need to learn about paint!
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Super Member
Re: Paint thickness questions
Originally Posted by choijw2
Ah, door jam and under the hood is not clear coated right? It is, but very thinly and that's why it's a good gauge.
reand I meant the thickness of the paint.
Dunno, but it seems the hard clear coats (GM) have the highest readings were as the Asian cars have the thinnest readings and the softest clear.
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Super Member
Re: Paint thickness questions
Normally the primer and basecoat are the same ( 2 coats each) so it is the clear that makes up the rest. Hardness or softnest has no bearing on thickness. The 30 primer, 30 basecoat seems close to me, so rest is clear. Now if it is a recoat then you need to speak to the painter to see how far he stripped the previous paint or how many coats of clear he applied. The idea of the guage is to give you an idea of how much paint you have to work with ( the clearcoat- think posti- note analogy).
Crispy 2001 Pontiac Grand Prix DD, always clean (except today) Hobby Detailer
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